Exhibits: Plastic Rings, Pvc Cover, Paper Cover, Double Wire.

展品：装订胶圈，装订胶片，皮纹纸，双铁圈。

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Design principle, structure, operation and maintenance of ZNS3 double wire decker were introduced in this paper.

介绍了ZNS3双网脱水机的设计原理、结构、操作与维护。

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On the current technical level, the double wire submerged arc narrow groove welding technology invented by Harbin welding Institute was recognized by the market.

就目前的技术水平而言，国内的哈尔滨焊接研究所的双丝埋弧窄间隙焊接技术较为被市场所认可。

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Along either side of the road lay broad swathes of landmines and a double fence of barbed wire that stretches the 151-mile (248 km) length of the DMZ.

CNN: Bush peers into 'evil' North Korea

"Most of us would want to help a friend in need, but if it's an online friend, and they want you to wire money, you should double-check, " FBI spokesman Jason Pack said.

CNN: Facebook, Twitter crooks just a click away

Tosca runs up a flight of stairs into the tower, and then a stunt double leaps from a window and, thanks to a wire, stops in midair.

NEWYORKER: Fiasco